Need help, new hydor ETH making terrible buzzing sound

BullyBee

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My brand new Hydor ETH is making terrible buzzing sounds. It’s plugged into a Finnex controller.

Anyone else ever experience this?
 
It even does it when plugged into the wall
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

  • Yes!

    Votes: 32 45.7%
  • Not yet, but I have one that I want to buy in mind!

    Votes: 9 12.9%
  • No.

    Votes: 26 37.1%
  • Other (please explain).

    Votes: 3 4.3%
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